Hello every one, hope every one enjoyed there holidays. I have a couple questions I need to get answered. My brother in law is going from an xcr 600 to a 900 switch back. It is a 2005. What we want to know is what we should be looking for, like wear and engine, and any thing else that we should be aware of. We would like to know why did Polaris stoped making the big 900 for 2007. If there is any thing else we need to know can you guys please let me know. Thanks for your time and help.